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The question is short and simple.

Say I use i.e. in my formal publication. Which is correct?

... by the interior landmarks, i.e. elevators and escalators.


... by the interior landmarks, i.e., elevators and escalators.

What about e.g.? Is it always followed by a ,?

marked as duplicate by mplungjan, RegDwigнt Aug 26 '13 at 9:22

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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  • Personally I always prefer ie. and eg. - the extra dot just looks messy IMHO and who cares if the original Latin is 2 words? The end dot still shows that it's a phrase abbreviation. – Jez Aug 26 '13 at 9:03
  • Please search the site before asking. Please also make sure that the title of your question actually matches the question. – RegDwigнt Aug 26 '13 at 9:24
  • @perfectionm1ng Which exactly is your question? Your title asks one question - which does appear to be answered by the 'duplicate' question. But your question text asks a different question - which is answered by the linked questions. – TrevorD Aug 26 '13 at 14:49
  • I'd simply replace the second period with a comma; i.e, I would punctuate it like this. But then, I'm a licensed professional. – John Lawler Aug 26 '13 at 16:33

The Blue Book of Grammar and Punctuation recommends using a semicolon before and a comma after that is, for example, i.e., and e.g. For example,

You will need writing materials; e.g., pens and pencils.

  • Interesting Jasper. Is that actually used? Frankly, I don't think I have seen much of that (";"). Isn't more common just the "," ? – Pam Aug 26 '13 at 8:53

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